List of the 13 techniques the CIA used on detainees

Thirteen "enhanced interrogation techniques" — interrogation methods — are at the center of the Senate Intelligence committee report about the CIA's use of harsh interrogation tactics after the Sept. 11, 2001, terror attacks. Here are the methods, as listed by a May 30, 2005, Justice Department memo to the CIA:

The interrogator grabs the detainee by the collar, with two hands, and pulls him closer in, according to a description of the technique by former CIA acting general counsel John Rizzo. Rizzo described this technique being used on al-Qaida operative Abu Zubaydah in his recent book, "Company Man."

The interrogator would put the detainee in a box, sometimes big enough to stand in, for up to 18 hours, or one only big enough to curl up in for up to two hours, Rizzo said in his book. The interrogator had the option to put a "harmless" insect inside the small box when the technique was used on Zubaydah, because he hated bugs, Rizzo said.

The interrogator slaps the detainee in the face, with fingers spread, striking between the chin and earlobe, Rizzo explained in his book. The idea, Rizzo said, was to startle or humiliate the detainee, Zubaydah, and "disabuse him of the notion that he wouldn't be physically hit."

7. NudityThis technique was used with others. For instance, a detainee would be forced to stand for prolonged periods while nude.

7. NudityThis technique was used with others. For instance, a detainee would be forced to stand for prolonged periods while nude.

Photo: Brennan Linsley, STF

7. Nudity This technique was used with others. For instance, a... Photo-7241159.99196 - Houston Chronicle

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8. Stress Positions

The purpose of these techniques are to stimulate mild discomfort from extended muscle use, according to a description in a government document obtained by the ACLU. Two such positions, used on Zubaydah, were to have him sit on the floor with his legs stretched out in front of him and his arms above his head, or kneeling on the floor while leaning back at a 45-degree angle, Rizzo said in his book.

Interrogators slam detainees against a wall. In one instance, Zubaydah was slammed against a concrete wall, the Senate report said. On March 22, 2003, al-Qaida leader Khalid Sheikh Mohammed underwent "intense" questioning and walling. Giving up no new information, interrogators water-boarded him. After an hour of that, he said he was "ready to talk," the CIA said.

The detainee is strapped to a board or bench, and water is poured over the detainees face to simulate drowning. According to the Senate report, the technique brought on convulsions and vomiting, immediate fluid intake and involuntary leg, chest and arm spasms. Abu Zubaydah became "completely unresponsive, with bubbles rising through his open, full mouth." Zubaydah was described as "hysterical" after these sessions and "distressed to a level that he was unable to effectively communicate." At one point, Khalid Sheik Mohammad was water-boarded 65 times between the afternoon of March 12, 2003 and the morning of March 13.

12. Waterboarding The detainee is strapped to a board or bench,... Photo-7249425.99196 - Houston Chronicle

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13. Water Dousing

Naked detainees were held down on a tarp on the floor, according to the Senate report. The tarp would be pulled up around them to make a bathtub. Cold or refrigerated water would be poured on them. In some cases, detainees were hosed down over and over again as they were naked and shackled, standing in a sleep deprivation pose.